Former Owner
- Arthur Lee Loeb1
- Arthur Liddell, 5th Baron Ravensworth1
- Arthur M. Ellis1
- Arthur M. Elliz1
- Arthur Thomas Bannister1
- Arthur Vershbow2
- Ashridge Priory4
- Ashton Rollins Sanborn1
- Athelstan Riley1
- Audry Wilkens1
- Augustus Pugin1
- Aulne Abbey3
- B. Goussil1
- B.C. Barker-Benfield1
- B.L. Riese1
- B.S. Cron1
- Baldasarre Boncompagni1
- Baldassarre Boncompagni5
- Ball Collection2
- Baptist Union Theological Seminary1